Measuring dielectric properties of fresh fruits and vegetables

Author

Nelson, S.O.

Author_Institution

Russell Res. Center, U. S Dept. of Agric., Agric. Res. Service, Athens, GA, USA

Volume

4

fYear

2003

fDate

22-27 June 2003

Firstpage

46

Abstract

The objectives of the study reported were to explore the frequency dependence of the dielectric properties of a few fruits and vegetables at frequencies below 200 MHz, and to obtain data on the temperature dependence of these properties as well, which are of interest in microwave heating and processing of such products. Permittivity measurements on a few different fruits and vegetables are presented for background information on the variation of the dielectric constant and loss factor with both frequency (10 MHz to 1.8 GHz) and temperature (5 to 95/spl deg/C).

Keywords

UHF measurement; agricultural products; dielectric loss measurement; permittivity measurement; 10 MHz to 1.8 GHz; 5 to 95 C; agricultural products; dielectric loss factor; dielectric properties; frequency dependence; fruits; microwave heating; microwave processing; open-ended coaxial-line probe; permittivity measurements; quality sensing; relative complex permittivity; temperature dependence; vegetables; Dielectric constant; Dielectric loss measurement; Dielectric losses; Dielectric materials; Dielectric measurements; Electromagnetic heating; Frequency measurement; Moisture; Permittivity measurement; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1220116

Filename

1220116